Overseaming attachment for sewing-machines.



. No. 678,877. Patented July 23, l90l.

. E. B." HESS.

OVERSEAMING ATTACHMENT FOB SEWING MACHINES.

(Application filed Apr. 28, 1900.)

(No Model.)

WITNESSES: INVENTQR afgaphg/ y am W. Hi5 ATTUBNQY.

NITED STATES 7' Er ca.

EDWARD l3. HESS, OF BROOKLYN, NEW YORK, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE ROSS ATTACHMENT AND MACHINE COMPANY, OF NEW YORK.

OVERSEAMING ATTACHMENT FOR SEWING- MACHINES.

SPECIFICATION formingpart of Letters Patent No. 678,877, dated July 23, 1901.

Application filed April 28, 1900- To all whom, it may concern:

Be it known that I, EDWARD B. lines, a citizen of the United States, and a resident of the borough of Brooklyn, city of New York,

in the county of Kings and State of New York, have invented certain new and useful Improvements in Overseaming Attachments for Sewing-Machines, of which the following is a specification.

The present invention relates to zigzag stitching or overseaming sewing-machines or attachments.

One object of the invention is to produce an improved and simplified overseaming and blind-stitching mechanism, preferably in the form of an attachment which may be applied to existing machines made for plain stitching, and also to produce a mechanism having positive movements and insuring also posi- 2o tive lateral movements of the edge of the cloth, so that a superior grade of work may be produced at high speed.

Another objectof the invention is to adjust the base-plate and the presser-foot independ-- ently of each other.

Other objects of the invention will hereinafter appear.

To these ends my invention consists in certain combinations of devices and features of construction, all as will be more fully hereinafter described, and particularly set forth in the concluding claims.

In the accompanying drawings, in which my invention is shown in the form of an at-.. tachment to be applied to existing machines, Figure 1 is a plan of the mechanism, showing the needle and the presser-foot bar in section and the edge of the goods as having been forced transversely by the pusher. Fig. 2 is 0 a vertical section of the presser-foot carrier, I

illustrating the mode of effecting an adjustmentof the presser-foot. Fig. 3 is a rear elevation, partly in section, of the mechanism, some of the parts being broken away and the pusher and its parts being illustrated in the same position as at Fig. 1. Fig. 4 is a side elevation of the mechanism. Fig. 5 is a view showing the plunger elevated and the parts in normal position. Fig. 6 is a partial plan view illustrating the edge of the goods as way.

serial No. 14.724. (No model.)

having been returned to normal position, the pusher being also shown in normal position.

Throughout the several views similar parts are designated by similar numerals of referonce.

A T-shaped base-plate 1 is adj ustably secured upon the bed of the sewing-machine by a thumb-screw 2, which passes down through a slot 3 in the base-plate and engages a threaded hole provided in the machine-bed. The edge or edges of the fabric 4 feed along the work-face, being that side or edge of the baseplate which corresponds to the top of the T. This side or edge is grooved or fluted at 5 to assist in guiding the fabricas it feeds toward the needle, which latter is indicated at 6 and is fixed in a reciprocatory needle-bar 7; as usual. a

A reciprocating pusher-bar 8, Whose outer or working end is vertically slotted at 9 to fork or straddle the needle, pushes away the 'not be retarded by any inaccuracy in the formation of the latter but said pusher is close enough to the bed to enable it to catch the edge of any thin material that may be placed in the machine. The body of thepusher is flush with the top surface of the base plate and is provided with a lip or flange 11, which overhangs the upper edge of the slot 1Q. A keeper 12 is fastened upon 0 the upper surface of the base-plate by a screw 13 and overlaps said flange to prevent the pusher from jumping. It will thus be seen that while the pusher is enabled to slide freely it is also properly retained in the slide 5 The outward movement of the pusher is effected by a three-sided rotatory cam 14,

which is arranged vertically and in line with the pusher and engages the inner end of the latter. The cam is mounted upona horizon IOO against one of the sides of the cam by a spring 18, which is coiled about a shouldered screw 18, projecting from the side of the bracket 16, and one end of which catches over the side of said bracket, while the other end catches in a hole formed in a shoulder 19, extending upwardly from said pusher. Upon rotation of the cam the lower point thereof bears against the vertical inner face or end of the pusher and forces the same outwardly. During this movement said working point of the cam rides up along the edge of the pusher and of the shoulder 19 until said point reaches a dead-center, as illustrated at Fig. 3, so that the pusher is practically locked in its working position, since the spring 17 cannot move it back at this time. Upon the next movement of the ratchet and cam the said working point of the cam moves upwardly and in wardly out of working position, while the succeeding point swings into working position, said two points being then in the same vertical line and the intermediate side of the cam standing vertically, as at Fig. 5. During this movement the spring 17 moves the pusher inwardly until its inner edge is arrested by said vertical side of the 'cam. The ratchet-wheel is provided with a detent-spring 20, secured by a screw 21 to the under side of the baseplate. The purpose of this spring is to prevent accidental movement of the ratchetwheel in either direction. The free end of wheel against retrograde movement.

The rotation of the ratchet-wheel is effected intermittently by the needle-bar during the completion of the upstrokes of the latter through a vertically-movable plunger or slide-bar 22 and a pull-pawl 23, pivot-ed thereto. The body of the plunger is rectangular in cross-section and slides in a vertical guiding-groove or guideway 24, formed in the upright arm of the bracket 16. The plunger is confined in the groove by a side plate 25,

The lower portion of the plunger is recessed at 31 to provide room for the pawl 23, which hangs from a lateral stud 32, projecting from the recessed portion of the plunger. The pawl is arranged in line with the ratchetwheel and directly alonside of the pusher,

the arrangement being such that the pusher,

cam, ratchet-wheel, pawl, and plunger occupy very little space in the machine. The hooked end of the pawl stands normally in a position just below one of the ratchet-teeth, and as the plunger is lifted by the needle-bar the hook engages the tooth and rotates the ratchet-wheel. When the limit of the upward movement is reached, a shoulder or lug 33, provided upon the pawl, contacts with a suitably-inclined fixed lug or shoulder 34,

formed by cutting away a portion of the side of the plungerguideway, Figs. 3 to 5, and positively locks the pawl against further upward movement and the ratchet-wheel against overthrow, the back of the pawl tooth or hook being suitably formed to coact with the sloping edges of the ratchet-teeth for this purpose.

The downward movement of the plunger, which occurs during the like movement of the needle-bar, is effected by a helical spring 35, the upper end of which engages a lateral pin 36, provided upon the plunger, and the lower end of which catchesupon a cross-pin 37, provided in the lower' portion of the baseplate, the latter being vertically perforated at 38 to permit the entrance of the lower end of the spring. During the downward movement of the plunger the pawl slips over the succeeding ratchet-tooth and is positively guided to a position for engaging the latter by reason of the engagement of said shoulder 33 upon the pawl, with a fixed abutment 39 formed upon the base-plate and having a suitable inclination. By reason of the provision of the two abutments 34 and 39 and the shoulder 33 the machine may be run at high speed without danger of overthrow of the plunger or ratchet-wheel and cam and also without liability of failure of the pawl to properly engage the ratchet-teeth upon the upstroke. j

It will be seen that the movement of the needle-bar is communicated to the pusher by a short train of mechanism, all of the parts of which are simply formed and have simple movements and ample wearing-surfaces, so that the machine may be operated at high speed without danger of becoming deranged or of rapidly wearing out.

The fabric passes beneath a presser-foot 40, which is arranged alongside of the working edge of the base-plate 1, so that the upturned edge of the goods may pass between the presser-foot and the base-plate. The presser-foot'attachment comprises two porlions, one portion of which is secured directly to the usual presser-foot bar 10" of the sewingmaehine and supports or carries the other.

The carrier (designated as 41) is in the form of an angle-block, the upright portion of which is grooved or slotted at 42 to fit over the presser-foot bar and also at 43 to receive the shank of a horizontal thumb-screw 44, by which the carrier is fastened to the bar. The slot 43 is narrower and shorter than the other and is provided to enable the carrier to be ad justed vertically upon the bar. The horizontal portion of the angular carrier41 is grooved upon its under side at 45 to receive the correspondingly-grooved upper face of a horizontal plate 46, the latter being formed integrally with the presser-foot or rigidly secured thereto. By means of the plate and the groove in the carrier the presser-footis enabled to slide in a direction at right angles to the direction of feed of the fabric. In order to control such sliding movement and efiect fine adjustments of the presser-foot to accommodate different thicknesses of cloth, the plate 46 is provided with a vertical stud 47, which passes up through a slot 48, cut in the horizontallyextending portion of the carrier, said stud being provided about midway of its height with a threaded perforation, with which engages a horizontal thumb-screw 49, having a neck 50, which engages a recess 51, formed in a plate 52, the latter being secured by screws 53 to the end of the carrier and covering the end of the slot 48. By turning the screw 49 an adjustment of the presserefoot may be effected relatively to the carrier 41. A perforated spring friction-plate 54 is passed over the top of the stud 47 and bears upon the top surface of the horizontal portion of the carrier-block 41, partially covering the slot 48. The purpose of this plate is to prevent accidental movement of the presser-foot upon the carrier, and the amount of friction between the plate and the carrier-block that is needed for this purpose may be obtained by adjustment of a nut 55, which engages the threaded upper end of the stud 47 and bears down upon the spring-plate 54.

The presser-foot is recessed at 56 to permit the transverse movement of the edge of the fabric caused by the outward movement of the pusher 8. Working in this recess is a second pusher 57, which is vertically slotted at 57 a to afford a passage for the needle. This pusher stands in line with the pusher 8 and is forced back by the latter-that is to say, when the edge of the cloth is carried over by the pusher 8 the pusher 57 yields to permit the entrance of the cloth into the recess 56, as illustrated at Fig. 1. Upon the return movement of the pusher S the pusher 57 fol lows it and forces the edge of the cloth back to normal position, as illustrated at Fig. 6, the return movement of the pusher 57 being effected by a spring 58, which is coiled around a stem 59, formed integrally with or rigidly fixed to the pusher-head and at one end bears against the inner face of a frame or housing 60, which is horizontally perforated at -both its ends to receive the said stem and permit a sliding movement thereof. The other end of the spring bears against a nut 61, which engages the threaded base portion of the stem. This nut limits the return movement of the pusher by contacting with an inner face of the housing and is made adjustable, so as to enable the head of the pusher to set normally flush with the side face of the presser-foot. An adjustment of the nut may be effected by inserting a pin into holes formed in the periphery thereof. The bottom surface of the pusher 57 is substantially flush with the bottom surface of the presser-foot. The housing and stem are placed at an elevation, so as not to impede or interfere with the feeding of the goods. The presser-foot presses down on both sides of the needle, thereby holding the goods at each side of the pusher 5.7 and preventing the goods from being pushed out askew by the pusher S.

In operation the base-plate is adjusted toward or from the needle by means of thumbscrew 2 and slot 3 to regulate the length of the stitch. The presser-foot may be independently adjusted, as desired, more space being left between the presser-foot and the base-plate when heavy fabric is to be stitched, so as to accommodate the extra thickness of the goods when the edge thereof is pushed out by the pusher 8. If two pieces of fabric are to be sewed together, they may-be placed one above the other in the machine in the usual manner with their edges together. If work of the character of blind stitching or the like is to be done, the edge portion of the goods may be suitably foldedas, for instance, in

the manner illustrated at Fig. 5with the ex-.

treme edge upturned and feeding along between the working edge of the base-plate and the presser-foot.

Uponsetting the sewing-machine in motion the needle passes through the slot 58 in the pusher 57 and through the three plies of the fabric in such a manner as to form a blind stitch. Upon the upstroke of the nee-. dle-bar and after the needle has been with drawn from the fabric the contact 28 upon the bar engages the tappet 27, thereby lifting the plunger 22, together with the pawl 23-. The latter engages the adjacent ratchet-tooth 17 and turns the ratchet-wheel, together with the cam 14, through one-sixth of a revolution. The spring 20 snaps over the edge of its ratchet-tooth and engages the next tooth. The lower point upon the cam forces the pusher 8 outwardly, said point working up along the vertical inner edge of the pusher. In its outward movement the pusher engages the raw or single edge of the fabric and forces it transversely, together with the folded edge,

to the position illustrated at Figs. 1 and 3.

As the edge of the fabric is pushed across it.

enters the recess 56 in the presser-foot, the

pusher 57 yielding to permit the entrance of I At this time the needle-bar has reached the limit of its upstroke, and it will the fabric.

be understood that the longitudinal feed of the cloth takes place as usual.-

ICC

Upon the succeeding downstroke of the needle-bar the plunger 22 is drawn down by the spring 35,and

the pawl 23 slips past the succeeding ratchettooth, being then positively guided into position for subsequent engagement with said tooth by the fixed abutment 39, which engages the shoulder 33 upon the pawl for this purpose. At this time there is no movement of the ratchet wheel or cam, and retrograde movement of the pusher 8 is prevented because the working-point of.the cam is at the dead-center, Fig. 3. During the completion of the downstroke of the needle-bar the needle passes down through the slot 9 in the pusher 8 and entirely outside of the edge of the fabric, so as to form an overseamingstitch, Figs. 1 and 3. Upon the next upstroke of the needle-bar the plunger 22 is again lifted,and through the pawl 2-3 and the ratchet 17 the cam isturned one sixth of a revolution to the non-working position shown at Fig.5,

thus permitting the spring 18 to return the .pusher S to normal position, with its inner edge resting against the vertical edge or side of the cam. During the said return movement of the pusher 8 the spring 58 operates to return the pusher 57, whereby the upturned edge of the fabric is forced back to normal position. At about this time another longitudinal feed of the fabric occurs, and the cycle of operations is repeated until the seam is finished. Owing to the described transverse movements of the longitudinally-feeding fabric, the stitch formed is of a zigzag character and is adapted for a variety of work. The provision of the return-pusher 57 is in many instances of much importance, as it insures that the edge of the cloth shall always be properly returned to normal position, andhence that the stitches shall be uniform in length and correctly placed, which is not always the case Where the elasticity of the goods is Wholly depended upon to return the edge to normal position. The natural spring of the cloth does not always cause it to move back with sufficient promptness to enable uniform stitches to be made at high speed. The provision of the independent adjustment for the presser-foot is also of importance, because it enables a variation to be made in the space between the working edge of the base-plate l and the working face of the pusher 57, (the latter being considered as in its pushed-back condition, as illustrated at Fig. 1,) so that different thicknesses of goods may be accommodated without changing the length of the stitch.

Many changes may be made in the construction and arrangement of the parts within the scope of the invention, and portions of my improvements may be used without others.

What I claim as new, and desire to secure by Letters Patent, is

1. In a sewing-machine, the combination with a needle and a reciprocatory needle-bar,

of a base-plate provided with a guideway, a

sliding pusher in proximity to the needle and arranged in said guideway so that it may reciprocate horizontally in a d irection crosswise of the travel of the fabric, a three-sided rotatory cam operatively connected to the needlebar and directly engaging said pusher to reciprocate the same, and a spring for returning said pusher to normal position, said cam being vertically arranged and placed in line with and behind said pusher and rotating upon a horizontal axis.

2. In a sewing-machine, the combination with a needle and a reciprocatory needle-bar,

of a base-plate provided with a guideway, a

sliding spring pressed pusher in proximity to the needle and arranged in'said guideway so that it may reciprocate horizontally in a direction crosswise of the travel of the fabric, a rotatory cam controlled by the needle-bar and directly engaging said springpressed pusher to reciprocate the same, a series of teeth provided upon said cam, a pawl operated by the needle-bar and engaging said teeth to intermittently rotate the cam, and means for positively locking the cam against overthrow.

3. In a sewing-machine, the combination with a needle and a reciprocatory needle-bar, of a base-plate provided with aguideway, a spring-pressed sliding pusher in proximity to the needle and arranged in said guideway so that it may reciprocate horizontally in a direction crosswise of the travel of the fabric, a rotatory cam controlled by the needle-bar and directly engaging said spring-pressed pusher to reciprocate the same, a series of ratchetteeth provided upon said cam, a pawl operated by the needle-bar and engaging said teeth tointermittently rotate the cam, and a fixed abutment constructed to coact with said pawl to positively lock the ratchet -teeth against overthrow.

4. In a sewing-machine, the combination with a needle and a reeiprocatoryneedle-bar, of a base-plate provided with a guideway, a spring-pressed sliding pusher in proximity to the needle and arranged in said gnideway so that it may reciprocate horizontally in a direction crosswise of the travel of the fabric, a rotatory cam controlled by the needle-bar and directly engaging said spring-pressed pusherto reciprocate the same, a seriesof teeth provided upon said cam, a pawl operated by the needle-bar and engaging said teeth to intermittently rotate the cam, and a fixed abutment arranged. in the path of a shoulder formed upon the pawl and constructed to engage therewith at the completion of the working stroke of the pawl to prevent vibration of the pawl and hence lock the ratchet-wheel and cam against overthrow.

5. In a sewing-machine, the combination with a needle and a reciprocatory needle-bar, of a base-plate provided with a guideway, a spring-pressed sliding pusher in proximity to the needle and arranged in said guideway so that it may reciprocate horizontally in a direction crosswise of the travel of the fabric,

a rotatory cam controlled by the needle-bar and directly engaging said spring-pressed pusher, a series of ratchet-teeth provided upon said cam, a pawl reciprocated by the needle -bar, a fixed abutment arranged to guide the pawl into position for engaging said ratchet-teeth, and a second fixed abutment constructed to coact with said pawl to lock the ratchet-teeth against overthrow.

6. In a sewing-machine, the combination with a needle and a reciprocatory needle-bar, of a base-plate provided with a guideway, a sliding pusher in proximity to the needle and arranged in said guideway so that it may reciprocate horizontallyin a direction crosswise of the travel of the fabric, a rotatory cam directly engaging said pusher, said cam being vertically arranged and placed in line with and behind said pusher, a ratchet-wheel arranged alongside of said cam and secured thereto, a pawl arranged in line with said ratchet-wheel,a vertical plunger to which said pawl is pivoted, and means upon said plunger for engaging the needle-bar.

7. In a sewing-machine, the combination with a needle and a reciprocatory needle-bar, of a vertically-sliding plunger arranged parallel with said needle-bar, means'for enabling the needle-bar to engage said plunger, and a horizontally and laterally moving pusher operatively connected to said plunger and arranged in proximity to the needle.

8. In a sewing-machine, the combination with a needle and a reciprocatory needle-bar, of a base-plate, a bracket erected thereon, a vertically sliding plunger guided in said bracket, means for enabling the needle-bar to engage said plunger, a rotatory device operated by said plunger, and a pusher operated by said rotatory device.

9. In a sewing-machine, the combination with a needle, and a reciprocatory needle-bar, of a base-plate, a bracket erected thereon, a vertically-sliding spring-returned plunger guided in said bracket, means for enabling of a base-plate, a bracket erected thereon, a

structed to push the edge of the fabric transversely of its travel.

12. In a sewing-machine, the combination with a needle and a reciprocatory needle-bar, of a vertically-sliding plunger, means for enabling the needle-bar to engage said plunger, a locking pull-pawl carried by said plunger, a vertically-arranged ratchet-wheel having six teeth, a triangular cam connected to said ratchetwheel, and a horizontally guided pusher directly engaged by said cam and arranged in proximity to the needle.

' 13. An overseaming mechanism for sewingmachines, comprising a ratchet-wheel, a pawl operatively connected to the needle-bar, a triangular cam, an abutment for guiding said pawl into engagement with the ratchet-wheel, means for positively locking the ratchetwheel against overthrow, and a pusher reciprocated by means of said ratchet-wheel and cam.

14. In a sewing-machine, the combination With a needle and a reciprocatory needle-bar, of a base-plate carrying a pusher arranged in proximity to and on one side of the needle, said pusher being operatively connected to the needle-bar and constructed to reciprocate in the base-plate horizontally and intermittently project therefrom to move the edges of the fabric in a direction crosswise of the direction of their feed, and a presser-foot movable and adjustable horizontally toward and away from the base-plate and from the edges of the fabric to accommodate different thicknesses of goods.

15. In a sewing-machine, the combination with a needle and a reciprocatory needle-bar, of a base-plate, a pusher carried .thereby and .arranged in proximity to the needle, said pusher being operatively connected to the needle-bar and constructed to reciprocate horizontally in a direction crosswise of the travel of the fabric, and said base-plate being adjustable toward and away from the needle to vary the length of the stitch, and a presserfoot adjustable toward and from the baseplate to accommodate difierent thicknesses of goods.

16. An overseaming mechanism for sewingmachines, comprising a base-plate, provided with a work-face, on one side of the needle, a pusher carried by said base-plate and arranged in proximity to the needle, said pusher being operatively connected to the needle-bar and constructed to project intermittently from the base-plate horizon tally in a direction crosswise of the travel of the fabric, and a presser-foot carried by the presser-foot bar of the sewing-machine and movable and adjust-v able horizontally toward or away from the work-face of said base-plate.

17. In a sewing-machine, the combination with a needle and a reciprocatory needle-bar,

flange which overhangs the upper edge of the slot, and a keeper fastened upon the upper face of the base-plate and overlapping said lip.

18. A mechanism for making a zigzag or overseaming stitch, comprising, in combination, a pusher for moving the edge of the goods transversely to the path of the travel thereof at a point in proximity to the needle, and a second pusher for moving said edge in the opposite direction, both of said pnshers being vertically slotted for the needle at their adjoining ends.

19. A mechanism for making a zigzag or overseaming stitch, comprising, in combination, a pusher for moving the edge of the goods transversely to the path of the travel thereof at a point in proximity to the needle, a presser-foot, and a second pusher carried by said presser-foot.

20. A mechanism for making a zigzag or overseaming stitch, comprising, in combination, apusher for moving the edge of the goods transversely to the path of thev travel thereof at a point in proximity to the needle, a presser-foot, and a spring-pressed pusher carried by said presser-foot.

21. A mechanism for making a zigzag or overseamingstitch, comprising, in combina tion, a pusher for moving the edge of the goods transversely to the path of the travel thereof at a point in proximity to the needle, a presser-foot, and a spring-pressed sliding pusher carried by said presser-foot.

22. A mechanism for making a zigzag or overseaming stitch, comprising, in combination, a pusher for moving the edge of the goods transversely to the path of the travel thereof at a point in proximity to the needle,

Y a presser-foot, a slot formed in the working face of said presser-foot,'and a spring-pressed pusher working in said slot and flush with said working face.

23. A mechanism for making a zigzag or overseaming stitch, comprising, in combination, a pusher for moving the edge of the goods transversely to the path of the travel thereof at a point in proximity to the needle,

a presser-foot, a slot formed in the working face of said presser-foot, a pusher Working in said slot and flush with said working face and having a horizontal guide-stem, and a spring surrounding said guide-stem.

24:. A mechanism for making zigzag or overseaming stitches, comprising, in combination, a vertically-movable plunge r,a pawl, a ratchetwheel, a cam, a pusher, a presser-foot, and a second returning-pusher.

25. A mechanism for making zigzag or overseaming stitches, comprising, in combination, a base-plate, a guide-bracket erected thereon, a vertically-movable plunger guided in said bracket, a pawl carried by said plunger, a cam operated by said pawl, a sliding springpressed plunger operated by means of said cam, a presser-foot adjustable toward or away sliding pusher carried by said presser-foot.

27. Inasewing-machineattach1nent,abaseplate provided with a guideway, a pusher-bar movable in said guideway, a standard mounted on said base-plate and provided with a guideway, a slide-bar movable in the guideway of the standard, and adapted to be reciprocated by the needle-bar of a sewing-machine, and mechanism for conveying motion from said slide-bar to said pusher-bar to reciprocate the latter.

28. Inasewing-machineattachment,abaseplate provided with a horizontal guideway, a pusher-bar movable in said horizontal guideway, a standard mounted on said base-plate and provided with a vertical guideway, a slide-bar movable in said vertical guideway and adapted to be reciprocated by the needlebar of a sewing-machine, a spring normally pressing said slide-bar downward, and mechanism for conveying motion from said slidebar to said pusher-bar to reciprocate the latter.

29. In asewing-machine attachment,abaseplate provided with a guideway, a pusher-bar movable in said guideway, a standard mounted on said base-plate and provided with a guideway, a slide-bar movable in the guideway of the standard and adapted to be reciprocated by the needle-bar of a sewing-machine, a cam engaging with said pusher-bar for reciprocating the same, and mechanism for conveying motion from said slide-bar to said cam for rotating the latter.

30. In asewing-machineattachment,abaseplate provided with a horizontal guideway, a pusher-bar movable in said horizontal guideway, a standard mounted on said base-plate and provided with a vertical guideway, a slidebar movable in said vertical guideway and adapted to be reciprocated by the needle-bar of a sewing-machine, a spring pressing said slide-bar downward,a cam engaging with said pusher-bar for reciprocating the latter, and mechanism for conveying motion from said slide-bar to said cam to rotate the latter.

31. Inasewing-machine attachment a baseplate provided with a guideway, a pusher-bar movable in said guideway, a standard mounted on said base-plate and provided with a guideway, a slide-bar movable in the guideway of the standard and adapted to be reciprocated by the needle-bar of a sewing-machine, a cam engaging with said pusher-bar to reciprocate the same, a gear for rotating said cam, and a pawl carried by said slide-bar for rotating said gear.

32. In a sewing-machine, a presser-foot, in combination with an attachment having a base-plate provided with a guideway,a pusherbar movable in said guideway, a standard mounted on said base-plate and provided with a guideway, a slide-bar movable in the guideway of the standard and adapted to be reciprocated by the needle-bar of a sewingmachine, and mechanism for conveying motion from said slide-bar to said pusher-bar to reciprocate the latter.

33. In a sewing-machine a presser-foot in combination with an attachment having a base-plate provided with a guideway a pusherbar movable in said gnideway, a standard mounted on said base-plate and provided with a gnideway, a slide-bar movable in the guideway of the standard and adapted to be reciprocated by the needle-bar of a sewing-masaid cam, and a pawl carried by said slidebar for rotating the gear.

Signed at the borough of Manhattan, city of New York, in the county of New York and State of New York, this 27th day of April,

EDWARD B. HESS. Witnesses:

K. V. DONOVAN, FLORENCE KEELING. 

